Although the borehole of RX02 shows that there are no caves at 24-47m, the electromagnetic wave CT image shows that there is a low-resistance area at 24-32m, which is judged to be an overburden or cave development area.
Although the drilling of RX02 shows no karst caves at 24-47m, from the electromagnetic wave CT image, there is a part of the low resistance area at 24-32m, which is determined as the coverage layer or karst cave development area.
RX02 borehole shows that there is no karst cave at 24-47m, but from the electromagnetic wave CT image, there is a part of low resistance area at 24-32m, which is judged as overburden or karst cave development area.